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Rooted by: Leap year
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  • Code 
    using System;

public class LeapYears
{
  public static bool IsLeapYear(int year)
  {
    return year % 400 == 0 || year % 100 != 0 && year % 4 == 0;
  }
}
     Test Cases 
    namespace Solution {
  using NUnit.Framework;
  using System;

  [TestFixture]
  public class LeapTests
  {
    [Test]
    public void Test1()
    {
      Assert.AreEqual(true, LeapYears.IsLeapYear(2000));
      
    }
    [Test]
    public void Test2()
    {
      Assert.AreEqual(true, LeapYears.IsLeapYear(2004));
    }
    [Test]
    public void Test3()
    {
      Assert.AreEqual(true, LeapYears.IsLeapYear(2008));
    }
    [Test]
    public void Test4()
    {
      Assert.AreEqual(false, LeapYears.IsLeapYear(1913));
    }
    [Test]
    public void Test5()
    {
      Assert.AreEqual(true, LeapYears.IsLeapYear(1848));
    }
    [Test]
    public void Test6()
    {
      Assert.AreEqual(false, LeapYears.IsLeapYear(2397));
    }
    [Test]
    public void Test7()
    {
      Assert.AreEqual(false, LeapYears.IsLeapYear(1900));
    }
  }
}
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  • Code
    • using System;
    • public class LeapYears
    • {
    • public static bool IsLeapYear(int year)
    • {
    • return year % 4 == 0 && !(year%100==0 && year % 400 != 0);
    • return year % 400 == 0 || year % 100 != 0 && year % 4 == 0;
    • }
    • }